*{
    margin:0;
    padding:0;
}

header{
    background: indigo;
    color:wheat;      
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 30px;
}

.logo-section{
    display:flex;
    flex-direction:column;
    align-items:center;
}

.logo-section img{
    width: 200px;
    height: 150px;
    object-fit: contain;
    align-items: center;
}


.logo-section img:hover{
    transform: scale(1.2);
}

.company-name{
    margin-top:5px;
    font-size:14px;
    font-weight:bold;
    text-align:center;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:20px;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:20px;
    padding:10px 15px;
    transition:0.3s;
}

nav a:hover{
    background: green;
    color:white;
    border-radius:5px;
}


.cert-table{
    width:95%;
    margin:auto;
    border-collapse:collapse;
}

.cert-table th{
    background:#003366;
    color:white;
    padding:12px;
}

.cert-table td{
    border:1px solid #ddd;
    padding:12px;
    text-align:center;
}

.cert-table tr:nth-child(even){
    background:#f5f5f5;
}

.update_certificate{
    text-align: center;
    color: black;
    margin: 40px;
}

.cert-table th{
    background:#003366;
    color:white;
    padding:12px;
}